ABAP Select data from SAP table SXMS_MET_REC_API into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SXMS_MET_REC_API table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to SXMS_MET_REC_API. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the SXMS_MET_REC_API table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_SXMS_MET_REC_API TYPE STANDARD TABLE OF SXMS_MET_REC_API,
      WA_SXMS_MET_REC_API TYPE SXMS_MET_REC_API,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <SXMS_MET_REC_API> TYPE SXMS_MET_REC_API.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SXMS_MET_REC_API.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SXMS_MET_REC_API
  INTO TABLE IT_SXMS_MET_REC_API.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SXMS_MET_REC_API
*  INTO TABLE @DATA(IT_SXMS_MET_REC_API2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_SXMS_MET_REC_API INDEX 1 INTO DATA(WA_SXMS_MET_REC_API2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SXMS_MET_REC_API ASSIGNING <SXMS_MET_REC_API>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SXMS_MET_REC_API>-SERVICE = 1.
<SXMS_MET_REC_API>-COMPONENT = 1.
<SXMS_MET_REC_API>-INTERFACE = 1.
<SXMS_MET_REC_API>-NAMESPACE = 1.
<SXMS_MET_REC_API>-INTERNALNAME = 1.

ENDLOOP.

LOOP AT IT_SXMS_MET_REC_API INTO WA_SXMS_MET_REC_API.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SXMS_MET_REC_API-OPERATION, sy-vline,
  WA_SXMS_MET_REC_API-COMPANYID, sy-vline,
  WA_SXMS_MET_REC_API-SYSTEMID, sy-vline,
  WA_SXMS_MET_REC_API-CALLERINFO, sy-vline,
  WA_SXMS_MET_REC_API-CALLINGAPPID, sy-vline,
  WA_SXMS_MET_REC_API-CALLINGTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SXMS_MET_REC_API you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_SXMS_MET_REC_API TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_SXMS_MET_REC_API INTO WA_SXMS_MET_REC_API.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SXMS_MET_REC_API_STR, 
SERVICE TYPE STRING,
COMPONENT TYPE STRING,
INTERFACE TYPE STRING,
NAMESPACE TYPE STRING,
INTERNALNAME TYPE STRING,
OPERATION TYPE STRING,
COMPANYID TYPE STRING,
SYSTEMID TYPE STRING,
CALLERINFO TYPE STRING,
CALLINGAPPID TYPE STRING,
CALLINGTYPE TYPE STRING,
CALLINGCOMPONENT TYPE STRING,
CALLINGCOMPANYID TYPE STRING,
CALLINGSYSID TYPE STRING,
CALLINGUSERCODE TYPE STRING,
BEGINTS TYPE STRING,
ENDTS TYPE STRING,
STATUS TYPE STRING,
PERIOD TYPE STRING,
CALLCOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SXMS_MET_REC_API_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_SXMS_MET_REC_API_STR-SERVICE sy-vline 
WA_SXMS_MET_REC_API_STR-COMPONENT sy-vline 
WA_SXMS_MET_REC_API_STR-INTERFACE sy-vline 
WA_SXMS_MET_REC_API_STR-NAMESPACE sy-vline 
WA_SXMS_MET_REC_API_STR-INTERNALNAME sy-vline 
WA_SXMS_MET_REC_API_STR-OPERATION sy-vline 
WA_SXMS_MET_REC_API_STR-COMPANYID sy-vline 
WA_SXMS_MET_REC_API_STR-SYSTEMID sy-vline 
WA_SXMS_MET_REC_API_STR-CALLERINFO sy-vline 
WA_SXMS_MET_REC_API_STR-CALLINGAPPID sy-vline 
WA_SXMS_MET_REC_API_STR-CALLINGTYPE sy-vline 
WA_SXMS_MET_REC_API_STR-CALLINGCOMPONENT sy-vline 
WA_SXMS_MET_REC_API_STR-CALLINGCOMPANYID sy-vline 
WA_SXMS_MET_REC_API_STR-CALLINGSYSID sy-vline 
WA_SXMS_MET_REC_API_STR-CALLINGUSERCODE sy-vline 
WA_SXMS_MET_REC_API_STR-BEGINTS sy-vline 
WA_SXMS_MET_REC_API_STR-ENDTS sy-vline 
WA_SXMS_MET_REC_API_STR-STATUS sy-vline 
WA_SXMS_MET_REC_API_STR-PERIOD sy-vline 
WA_SXMS_MET_REC_API_STR-CALLCOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.